Implementing a Security Architecture for Safety-Critical Railway Infrastructure
- 1 September 2021
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE) in 2021 International Symposium on Secure and Private Execution Environment Design (SEED)
Abstract
The digitalization of safety-critical railroad infrastructure enables new types of attacks. This increases the need to integrate Information Technology (IT) security measures into railroad systems. For that purpose, we rely on a security architecture for a railway object controller which controls field elements that we developed in previous work. Our architecture enables the integration of security mechanisms into a safety-certified railway system. In this paper, we demonstrate the practical feasibility of our architecture by using a Trusted Platform Module (TPM) 2.0 and a Multiple Independent Levels of Safety and Security (MILS) Separation Kernel (SK) for our implementation. Our evaluation includes a test bed and shows how certification and homologation can be achieved.Keywords
Funding Information
- Ministry of Education
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